New Holland CX720 Repair Manual page 39

DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
(50) Return Filter with Bypass
(51) Return Filter Element Differential Drop Indicator.
Electrical switch to indicate pressure differential as the filter becomes clogged during service.
(52) Thermostat Valve
Cooler bypass valve, directs cold oil away from the cooler and back into the return circuit. As the oil progressively
warms up the oil is then allowed, by the thermostat valve, through the cooler. A relief valve is incorporated to allow
direct routing to the return circuit when the pressure is too high for the system to cope with.
(53) Cooler
Hydraulic oil cooler, mounted with the engine cooler on the right hand side of the vehicle.
(54) Suction Filter
Located in the base of the reservoir in the suction line supplying the hydrostatic pump.
(55) Filler Cap With Breather
(56) Minimum level electrical switch for hydraulic oil reservoir. (high pressure system and hydrostatic system oil).
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